Big Bang Theory Review

Front

What is the Big Bang Theory?

Back

The Big Bang Theory is the scientific explanation that the universe began as a tremendous expansion approximately 13-15 billion years ago.

Front

What does CMB stand for and what is it?

Back

CMB stands for Cosmic Microwave Background Radiation, which is the remaining energy from the Big Bang.

Front

What is Cosmic Inflation?

Back

Cosmic Inflation refers to the rapid expansion of the universe that occurred shortly after the Big Bang.

Front

What is a spectrum in astronomy?

Back

A spectrum is a band of colors produced when light emitted from a star or galaxy is separated.

Front

How long ago did the universe begin according to current scientific understanding?

Back

The universe began approximately 13.8 billion years ago.

Front

What is redshift?

Back

Redshift is the phenomenon where light from distant galaxies is shifted towards the red end of the spectrum, indicating that the universe is expanding.

Front

What is the significance of the Cosmic Microwave Background Radiation?

Back

The CMB provides evidence for the Big Bang Theory and helps scientists understand the early universe.

Front

What does the term 'expansion of the universe' refer to?

Back

It refers to the observation that galaxies are moving away from each other, indicating that the universe is growing larger over time.

Front

What is the role of dark matter in the universe?

Back

Dark matter is a form of matter that does not emit light or energy, and it is believed to make up a significant portion of the universe's total mass.

Front

What is the difference between a star and a galaxy?

Back

A star is a massive, luminous sphere of plasma, while a galaxy is a vast system that contains billions of stars, along with gas, dust, and dark matter.